Lets take a more rational look at this.
Of the 1.1 quadrillion $ of derivatives, I will make an educated guess that 90% of them are cash settled (ie: cannot claim physical delivery). I make this claim based on 6 years of working for a trading desk in an investment bank (which did include trading commodity derivatives).
Also, consider that of the 1.1 Quadrillion $ of derivatives, for each long (future, option, swap etc...) there must be a short. So that brings the true outstanding longs down to 550 trillion.
Now, let assume that there is a fairly even distribution of derivatives that are in-the-money (the position has made money) and out-of-the-money (the position has lost money)... I base this on looking at the COMEX open interest by option strike prices. So out of the 550 trillion in outstanding longs, only 225 trillion are actually worth anything.
Further, a derivative has by definition a maturity date. And most of the outstanding derivatives will only pay out at maturity date (eg. Futures contract or a European option - the most common type of commodity derivative traded).. So of the 225 trillion of in-the-money long positions, only the ones maturing today will be liable to be settled today. Granted, looking at COMEX data, over 50% of the open interest is in the front month - lets assume that holds for OTC (therefore cash settled) derivatives too. So only 112.5 trillion of the outstanding longs are liable for settlement this month.
and since 90% are cash settled, that leaves a potential 11.25 trillion of physically deliverable, in-the-money longs that are eligible to claim delivery this month.. not such an outrageous sum any more. And I guarantee you (again, based on the turnover I did when on the commodities desk), most of those positions are held by broker/dealers... who have no interest in physical delivery.
Also as all derivatives are margined daily (generally with cash), all cash profits an losses on them have already been realized... (this is a post GFC development, where OTC derivs are now margined) so a blow-up is far more remote.